netdev - Re: [RFC 05/12] nfp: add BPF to NFP code translator

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Date:	Wed, 1 Jun 2016 13:09:17 -0700
From:	John Fastabend <john.fastabend@...il.com>
To:	Daniel Borkmann <daniel@...earbox.net>,
	Jakub Kicinski <jakub.kicinski@...ronome.com>,
	netdev@...r.kernel.org
Cc:	ast@...nel.org, dinan.gunawardena@...ronome.com
Subject: Re: [RFC 05/12] nfp: add BPF to NFP code translator

On 16-06-01 01:03 PM, Daniel Borkmann wrote:
> On 06/01/2016 06:50 PM, Jakub Kicinski wrote:
>> Add translator for JITing eBPF to operations which
>> can be executed on NFP's programmable engines.
>>
>> Signed-off-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
>> Reviewed-by: Dinan Gunawardena <dgunawardena@...ronome.com>
>> Reviewed-by: Simon Horman <simon.horman@...ronome.com>
> [...]
>> +int
>> +nfp_bpf_jit(struct bpf_prog *filter, void *prog_mem, unsigned int
>> prog_start,
>> +        unsigned int tgt_out, unsigned int tgt_abort,
>> +        unsigned int prog_sz, struct nfp_bpf_result *res)
>> +{
>> +    struct nfp_prog *nfp_prog;
>> +    int ret;
>> +
>> +    /* TODO: maybe make this dependent on bpf_jit_enable? */
> 
> Probably makes sense to leave it independent from this.

Agreed we have an ethtool flag for the other offloads I think this
should just follow the same semantics and get offloaded if the flag
is set.

> 
> Maybe that would rather be an ethtool flag/setting?
> 

I would think using the same flag as we did for u32 and flower
should be fine.